Watch carefully how a parasitic fungus called Cordyceps gets inside the brain of bullet ants and takes control over it.

There are literally thousands of different types of cordyceps fungi, each specialized to take control over just one species’ brain.

Now how (and why) do they take over control?

In this clip taken from the BBC’s superb Planet Earth series (narrated by Sir David Attenborough) you’re about to discover how and why…